4 * Copyright 1999 Eric Kohl
5 * Copyright 2004 Robert Shearman
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 * This code was audited for completeness against the documented features
24 * of Comctl32.dll version 6.0 on Mar. 10, 2004, by Robert Shearman.
26 * Unless otherwise noted, we believe this code to be complete, as per
27 * the specification mentioned above.
28 * If you discover missing features or bugs please note them below.
41 #include "wine/debug.h"
43 WINE_DEFAULT_DEBUG_CHANNEL(commctrl);
45 /* for compiler compatibility we only accept literal ASCII strings */
47 #define TEXT(string) string
49 #define DRAGLIST_SUBCLASSID 0
50 #define DRAGLIST_SCROLLPERIOD 200
51 #define DRAGLIST_TIMERID 666
53 /* properties relating to IDI_DRAGICON */
54 #define DRAGICON_HOTSPOT_X 17
55 #define DRAGICON_HOTSPOT_Y 7
56 #define DRAGICON_HEIGHT 32
58 /* internal Wine specific data for the drag list control */
59 typedef struct _DRAGLISTDATA
61 /* are we currently in dragging mode? */
64 /* cursor to use as determined by DL_DRAGGING notification.
65 * NOTE: as we use LoadCursor we don't have to use DeleteCursor
66 * when we are finished with it */
69 /* optimisation so that we don't have to load the cursor
70 * all of the time whilst dragging */
71 LRESULT last_dragging_response;
73 /* prevents flicker with drawing drag arrow */
74 RECT last_drag_icon_rect;
77 UINT uDragListMessage = 0; /* registered window message code */
78 static DWORD dwLastScrollTime = 0;
79 static HICON hDragArrow = NULL;
81 /***********************************************************************
82 * DragList_Notify (internal)
84 * Sends notification messages to the parent control. Note that it
85 * does not use WM_NOTIFY like the rest of the controls, but a registered
88 static LRESULT DragList_Notify(HWND hwndLB, UINT uNotification)
92 dli.uNotification = uNotification;
93 GetCursorPos(&dli.ptCursor);
94 return SendMessageW(GetParent(hwndLB), uDragListMessage, GetDlgCtrlID(hwndLB), (LPARAM)&dli);
97 /* cleans up after dragging */
98 static inline void DragList_EndDrag(HWND hwnd, DRAGLISTDATA * data)
100 KillTimer(hwnd, DRAGLIST_TIMERID);
102 /* clear any drag insert icon present */
103 InvalidateRect(GetParent(hwnd), &data->last_drag_icon_rect, TRUE);
104 /* clear data for next use */
105 memset(data, 0, sizeof(*data));
108 /***********************************************************************
109 * DragList_SubclassWindowProc (internal)
111 * Handles certain messages to enable dragging for the ListBox and forwards
112 * the rest to the ListBox.
114 static LRESULT CALLBACK
115 DragList_SubclassWindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam, UINT_PTR uIdSubclass, DWORD_PTR dwRefData)
117 DRAGLISTDATA * data = (DRAGLISTDATA*)dwRefData;
122 data->dragging = DragList_Notify(hwnd, DL_BEGINDRAG);
126 SetTimer(hwnd, DRAGLIST_TIMERID, DRAGLIST_SCROLLPERIOD, NULL);
128 /* note that we don't absorb this message to let the list box
129 * do its thing (normally selecting an item) */
134 /* user cancelled drag by either right clicking or
135 * by pressing the escape key */
136 if ((data->dragging) &&
137 ((uMsg == WM_RBUTTONDOWN) || (wParam == VK_ESCAPE)))
139 /* clean up and absorb message */
140 DragList_EndDrag(hwnd, data);
141 DragList_Notify(hwnd, DL_CANCELDRAG);
150 LRESULT cursor = DragList_Notify(hwnd, DL_DRAGGING);
151 /* optimisation so that we don't have to load the cursor
152 * all of the time whilst dragging */
153 if (data->last_dragging_response != cursor)
158 data->cursor = LoadCursorW(NULL, (LPCWSTR)IDC_NO);
159 SetCursor(data->cursor);
162 data->cursor = LoadCursorW(COMCTL32_hModule, (LPCWSTR)IDC_COPY);
163 SetCursor(data->cursor);
166 data->cursor = LoadCursorW(NULL, (LPCWSTR)IDC_ARROW);
167 SetCursor(data->cursor);
170 data->last_dragging_response = cursor;
172 /* don't pass this message on to List Box */
180 DragList_EndDrag(hwnd, data);
181 DragList_Notify(hwnd, DL_DROPPED);
186 /* tell dialog boxes that we want to receive WM_KEYDOWN events
187 * for keys like VK_ESCAPE */
189 return DLGC_WANTALLKEYS;
192 RemoveWindowSubclass(hwnd, DragList_SubclassWindowProc, DRAGLIST_SUBCLASSID);
196 return DefSubclassProc(hwnd, uMsg, wParam, lParam);
199 /***********************************************************************
200 * MakeDragList (COMCTL32.13)
202 * Makes a normal ListBox into a DragList by subclassing it.
208 BOOL WINAPI MakeDragList (HWND hwndLB)
210 DRAGLISTDATA * data = Alloc(sizeof(DRAGLISTDATA));
212 TRACE("(%p)\n", hwndLB);
214 if (!uDragListMessage)
215 uDragListMessage = RegisterWindowMessageA(DRAGLISTMSGSTRING);
217 return SetWindowSubclass(hwndLB, DragList_SubclassWindowProc, DRAGLIST_SUBCLASSID, (DWORD_PTR)data);
220 /***********************************************************************
221 * DrawInsert (COMCTL32.15)
223 * Draws insert arrow by the side of the ListBox item in the parent window.
228 VOID WINAPI DrawInsert (HWND hwndParent, HWND hwndLB, INT nItem)
230 RECT rcItem, rcListBox, rcDragIcon;
234 TRACE("(%p %p %d)\n", hwndParent, hwndLB, nItem);
237 hDragArrow = LoadIconW(COMCTL32_hModule, (LPCWSTR)IDI_DRAGARROW);
239 if (LB_ERR == SendMessageW(hwndLB, LB_GETITEMRECT, nItem, (LPARAM)&rcItem))
242 if (!GetWindowRect(hwndLB, &rcListBox))
245 /* convert item rect to parent co-ordinates */
246 if (!MapWindowPoints(hwndLB, hwndParent, (LPPOINT)&rcItem, 2))
249 /* convert list box rect to parent co-ordinates */
250 if (!MapWindowPoints(HWND_DESKTOP, hwndParent, (LPPOINT)&rcListBox, 2))
253 rcDragIcon.left = rcListBox.left - DRAGICON_HOTSPOT_X;
254 rcDragIcon.top = rcItem.top - DRAGICON_HOTSPOT_Y;
255 rcDragIcon.right = rcListBox.left;
256 rcDragIcon.bottom = rcDragIcon.top + DRAGICON_HEIGHT;
258 if (!GetWindowSubclass(hwndLB, DragList_SubclassWindowProc, DRAGLIST_SUBCLASSID, (DWORD_PTR*)&data))
262 SetRectEmpty(&rcDragIcon);
264 /* prevent flicker by only redrawing when necessary */
265 if (!EqualRect(&rcDragIcon, &data->last_drag_icon_rect))
267 /* get rid of any previous inserts drawn */
268 RedrawWindow(hwndParent, &data->last_drag_icon_rect, NULL,
269 RDW_INTERNALPAINT | RDW_ERASE | RDW_INVALIDATE | RDW_UPDATENOW);
271 CopyRect(&data->last_drag_icon_rect, &rcDragIcon);
275 hdc = GetDC(hwndParent);
277 DrawIcon(hdc, rcDragIcon.left, rcDragIcon.top, hDragArrow);
279 ReleaseDC(hwndParent, hdc);
284 /***********************************************************************
285 * LBItemFromPt (COMCTL32.14)
287 * Gets the index of the ListBox item under the specified point,
288 * scrolling if bAutoScroll is TRUE and pt is outside of the ListBox.
291 * The ListBox item ID if pt is over a list item or -1 otherwise.
293 INT WINAPI LBItemFromPt (HWND hwndLB, POINT pt, BOOL bAutoScroll)
299 TRACE("(%p %ld x %ld %s)\n",
300 hwndLB, pt.x, pt.y, bAutoScroll ? "TRUE" : "FALSE");
302 ScreenToClient (hwndLB, &pt);
303 GetClientRect (hwndLB, &rcClient);
304 nIndex = (INT)SendMessageA (hwndLB, LB_GETTOPINDEX, 0, 0);
306 if (PtInRect (&rcClient, pt))
308 /* point is inside -- get the item index */
311 if (SendMessageA (hwndLB, LB_GETITEMRECT, nIndex, (LPARAM)&rcClient) == LB_ERR)
314 if (PtInRect (&rcClient, pt))
322 /* point is outside */
326 if ((pt.x > rcClient.right) || (pt.x < rcClient.left))
334 dwScrollTime = GetTickCount ();
336 if ((dwScrollTime - dwLastScrollTime) < DRAGLIST_SCROLLPERIOD)
339 dwLastScrollTime = dwScrollTime;
341 SendMessageA (hwndLB, LB_SETTOPINDEX, (WPARAM)nIndex, 0);